APA (7e ed.) Bronvermelding

SETHI SUBHASH C. (2003). TWENTY FIVE MINUTES TO ENHANCE YOUR ATTITUDE MANAGEMENT. INDIANA BOOKS.

Chicago (17e ed.) Bronvermelding

SETHI SUBHASH C. TWENTY FIVE MINUTES TO ENHANCE YOUR ATTITUDE MANAGEMENT. NEW DELHI: INDIANA BOOKS, 2003.

MLA (9e ed.) Bronvermelding

SETHI SUBHASH C. TWENTY FIVE MINUTES TO ENHANCE YOUR ATTITUDE MANAGEMENT. INDIANA BOOKS, 2003.